US9114185B2 - Apparatus for sanitizing medical devices - Google Patents

Apparatus for sanitizing medical devices Download PDF

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Publication number
US9114185B2
US9114185B2 US14/239,741 US201214239741A US9114185B2 US 9114185 B2 US9114185 B2 US 9114185B2 US 201214239741 A US201214239741 A US 201214239741A US 9114185 B2 US9114185 B2 US 9114185B2
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sanification
conduits
machine
fluids
chamber
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US20140205513A1 (en
Inventor
Pietro Affaitati
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Cantel Medical Italy SRL
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Cantel Medical Italy SRL
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Assigned to IMS S.R.L. reassignment IMS S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AFFAITATI, PIETRO
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
    • A61B19/34—
    • A61B2019/343—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/70—Cleaning devices specially adapted for surgical instruments
    • A61B2090/701—Cleaning devices specially adapted for surgical instruments for flexible tubular instruments, e.g. endoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/70—Cleaning devices specially adapted for surgical instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps

Definitions

  • the present invention is generally applicable to the field of devices for sanification, disinfection, decontamination and sterilization treatments of reusable medical devices and has particularly as an object a machine for the sanification of medical devices after use on a patient.
  • Such sanification treatment may be a simple disinfection treatment or a sterilization process, performed both at hot and cold temperature, also depending on the materials the various devices are made.
  • a washing liquid generally water, comprising in solution one or more chemical agents having more or less high decontaminating/sterilant properties.
  • the machines for the sanification treatment of medical devices comprise a compartment for housing one or more reservoirs of corresponding cleaning and/or decontaminating liquids.
  • the liquids are introduced into the chamber through a plurality of delivery conduits.
  • a device which comprises an outer sheath that encloses a plurality of channels, such as a flexible endoscope, it is necessary to connect a part of the delivery conduits to the inner channels of the device, so as to allow the passage of liquids even at their inside.
  • WO2005056060 discloses a machine for the sanification of endoscopes provided with a removable container defining the sanification chamber and designed to house an endoscope.
  • the connection of the inner channels to the delivery conduits of the liquids is obtained by means of suitable connections arranged both at the container wall and inside of a housing compartment of this latter provided in the machine frame.
  • Each connection is adapted to connect the respective channel to be served to the supplying reservoirs via a respective hydraulic circuit separated from the others and provided with a respective pumping device. Consequently, each circuit also needs its own control devices, in particular solenoid valves for the selective opening/closing of the respective circuits.
  • this configuration appears to be excessively complex and obviously the high number of components causes an increased risk of breakage and consequent machine downtime.
  • this configuration does not allow to maintain uniform the flows supplied to each channel because each circuit is adjusted independently from the others. Consequently, there is a risk that one or more of the channels of the device receives a flow not sufficient to ensure proper sanification, while others could be overcharged.
  • the inner channels of the endoscope do not have a direct connection with the supply channel and the inflow of the sanification liquid thereinside is only due to the delivery pressure of the liquid within the chamber. Consequently, the machine does not guarantee adequate circulation of the sanification liquid inside the inner channels of the endoscope and their effective sterilization.
  • WO2004/043499 discloses a machine for reprocessing endoscopes wherein the inner channels of the endoscope are individually connected with respective delivery conduits of the supply circuit through respective connection pipes. These latter are connected to one or more reservoirs for feeding one or more sanification liquids, possibly with the interposition of a reaction chamber of the reagents contained in the respective reservoirs.
  • the flowing of the liquid within the sanification circuit, and then towards the inlet conduit, is realized by a pump located upstream the reservoirs. Therefore, no control of pressure on the single delivery conduits is provided, with the consequent drawback that one or more channels of the device could receive a flow not sufficient to ensure its proper sanification.
  • EP1767140 discloses a machine for disinfection of endoscopes wherein the inner channels of the endoscope are connected to respective delivery conduits via a multiple connector. Even in this case, however, there is no device adapted to receive the sanitizing liquid and distribute it in a controlled manner to the single channels so as to ensure that in each of them the liquid flows with the right pressure.
  • An object of the present invention is to overcome the above mentioned drawbacks, providing a machine for cold sanification of medical device which has properties of high efficiency and relative cost-effectiveness.
  • a particular object is to provide a machine for the cold sanification of medical devices provided with inner channels which allows to control in a precise manner the flow of sanification fluids within each channel.
  • Yet another object of the present invention is to provide a machine for the cold sanification of medical devices that allows to uniformly deliver the sanification fluids inside the channels of the device to be treated.
  • FIG. 1 is an elevational view of a machine of the invention in a first preferred embodiment
  • FIG. 2 is an elevational view of a machine of the invention in a second preferred embodiment
  • FIG. 3 represents the hydraulic scheme of a machine of the invention in the embodiment of FIG. 1 ;
  • FIG. 4 represents the hydraulic scheme of a machine of the invention in the embodiment of FIG. 2 ;
  • FIG. 5 is an elevational view of a case for medical devices adapted to be used with the machine of the invention.
  • FIG. 6 is a front view of a particular of the case of FIG. 5 .
  • a machine for cold sanification of reusable medical devices such as rigid or flexible endoscopes, optical devices or other tools and equipment for diagnostic and/or surgical use, of the type having a sheath enveloping one or more inner channels.
  • a machine according to the invention may be used to perform a more or less advanced sanification treatment, or “reprocessing” of the devices, which may be treatments of simple cleansing or of disinfection and/or sterilization, preferably cold treatments, or through working fluids already active at temperatures substantially close to the environment temperature.
  • the level of disinfection or sterilization of the device may be linked to the disinfectant/sterilizing properties of the chemical agents in solution or dispersed in a liquid carrier, generally water, and/or to the contact and immersion time of the devices in the liquid.
  • a machine 1 will comprise essentially at least one sanification chamber 2 housing at least one medical device to be treated, not illustrated since of per se known type, and means 3 for supplying one or more sanification fluids within the sanification chamber 2 .
  • the supplying means 3 comprise a plurality of hydraulic circuits 4 , 4 ′, 4 ′′ each having a drawing conduit 5 , 5 ′, 5 ′′ for the sanification fluid connectable to a respective reservoir S, S′, S′′ and a plurality of delivery conduits 6 , 6 ′, 6 ′′, . . . connected with the sanification chamber 2 to deliver the same fluids under pressure.
  • Means 7 are also provided for the fluidic connection of at least part of the delivery conduits 6 , 6 ′, 6 ′′, . . . to corresponding inner channels of the device each time housed in the sanification chamber 2 .
  • a delivery pipe 8 is also provides which is designed to be connected to the inner channels of the device to supply the fluid directly into the sanification chamber 2 in order to treat the surface of the medical device.
  • the delivery means 3 comprise at least one central collector 9 interposed between the drawing conduits 5 , 5 ′, 5 ′′ and at least part of the delivery conduits 6 , 6 ′, 6 ′′, . . . for receiving from the first the sanification fluids and distributing the same to the delivery conduits 6 , 6 ′, 6 ′′, . . . with substantially the same value of pressure P and subsequently supplying the fluids to the connecting means 7 .
  • the supply pressure P may be between 1 and 5 bar and even more preferably between 2 and 4 bar.
  • the collector 9 will comprise a mixing chamber 10 for the sanification fluids having at least one inlet 11 for the drawing conduits, hereinafter referred for simplicity only with reference 5 , and one outlet 12 , 12 ′, 12 ′′, . . . for each of the delivery conduits 6 , 6 ′, 6 ′′, . . . .
  • the delivery conduits 6 connected to the collector 9 will be those designed to be connected to the inner channels of the medical device.
  • the delivery pipe 8 designed to supply the fluid directly into the sanification chamber 2 , externally to the device, may be connected to drawing conduits 5 without the interposition of the collector 9 .
  • the supplying means 3 comprise adjustment means 13 of the flow rate associated to each of the delivery conduits 6 and for example defined by a plurality of solenoid valves associated with each delivery conduit 6 , generally at the respective outputs 14 , so as to enable/disable the same in a selective and reciprocally independent manner, as a function of the cleaning cycle to be carried out.
  • Each drawing conduit 5 may comprise a picking spear 15 , 15 ′, 15 ′′ designed to be inserted into a respective reservoir S, S′, S′′, immersed in the fluid, and a first pumping device 16 , 16 ′, 16 ′′ adapted to promote the circulation of the fluid from the respective reservoir S, S′, S′′ to the mixing chamber 10 .
  • the supplying means 3 may comprise one or more second pumping devices associated with one or more of the delivery conduits 6 , downstream of the collector 9 .
  • two second pumping devices 17 , 17 ′ are provided which are associated with corresponding delivery conduits 6 , 6 ′.
  • supply ducts 6 associated with a second pumping device or may be provided more than two conduits, but preferably less than the total number of delivery conduits 6 .
  • Said second pumping devices 17 , 17 ′ will be adapted to raise the supply pressure of the fluids in the corresponding delivery conduits 6 , 6 ′ with respect to the output value from the collector 9 , depending on the operational needs.
  • the supplying means 3 may comprise a fluid recirculation circuit 18 having a premixing chamber 19 with first inlets 20 , 20 ′, 20 ′′ connected to respective drawing conduits 5 and a second inlet 21 connected to the water net R supplying water thereinside so as to mix the sanification fluids with water drawn from the net R and obtain a sanification mixture with a predetermined concentration of the selected chemical agents.
  • the premixing chamber 19 will also have an outlet conduit 22 connected to the mixing chamber 10 to send to the same the mixture of sanification fluids.
  • the recirculation circuit 18 will include a recovery duct 23 connected with the sanification chamber 2 for at least partially recovering the mixture after its passage through the inner channels of the medical device, as well as the mixture supplied directly into the sanification chamber 2 from the pipe 8 , and re-enter it in the premixing chamber 19 .
  • the input 24 of the recovery duct 23 will be realized on the wall of the sanification chamber 2 and may be associated to a solenoid valve for its selective opening/closing.
  • the recirculation circuit 18 will include a third pumping device 25 associated with the outlet conduit 22 of the mixture and dimensioned to promote the flowing of the mixture towards the mixing chamber 10 and subsequently towards the sanification chamber 2 .
  • the third pumping device 25 also promotes the inverse flowing of the mixture or water/fluid solution from the sanification chamber 2 to the premixing chamber 19 so as to determine the recirculation.
  • the outlet conduit 22 of the premixing chamber 19 will have two branches, a first 22 ′ of which will be connected to the collector 9 , while the other will be connected directly to the sanification chamber 2 , thus defining the delivery pipe 8 .
  • outlet conduit 22 can also be connected to an exhaust pipe 26 of the liquid at the end of the cleaning cycle.
  • the machine 1 may also comprise means 27 for supplying compressed air inside the sheath of the medical device to test its air-tightness.
  • the air supply pressure may be between 100 mbar and 400 mbar and preferably between 200 mbar and 250 mbar.
  • the compressed air supply means 27 may include a compressor 28 having a delivery pipe 29 adapted to be connected, through a respective solenoid valve 30 and the connecting means 7 , within the sheath of the medical device to supply thereinto air at high pressure and to test, by means of suitable pressure sensors, its integrity.
  • a circuit for feeding air at a pressure of between 1 and 2 bar, for example close to 1.5 bar, may be also provided, for the final drying cycle of the device.
  • each delivery conduit 6 may have an outlet 14 formed in the side wall of the sanification chamber 2 .
  • the sanification chamber 2 can be defined by a fixed bowl, as in FIG. 1 , or from a bag or case removably housed in a suitable compartment 31 of the machine 1 , as in the configuration of FIG. 2 .
  • case 2 will be adapted to be removed from the compartment 31 at the end of each reprocessing cycle for storing the sanitized device in a protected environment outside the machine 1 , thus allowing to carry out a new cycle to be carried out on a different device without compromising the previous cycle.
  • connectors 32 - 32 .sup.vii for the connection of a respective delivery conduit 6 to a corresponding channel of the device, a connector 33 to connect the inside of the sheath to the compressed air supply means 27 , a connector 34 for connecting the pipe 8 for loading the water and a connector 35 for connecting the sanification chamber 2 to the exhaust pipe 26 .
  • the connectors will be integral to the same and will be made connectable to the delivery conduits 6 , 8 through additional connectors, not shown in the figures, arranged in the housing compartment 31 and adapted to be coupled to connectors of the case 2 in a male and female manner.
  • the fluidic connection means 7 may include a plurality of pipes, not shown, adapted to removably connect each output 14 of the delivery conduits 6 to a respective inner channel of the medical device.
  • each connector pipe can be housed in the sanification chamber 2 and may have one end connected to a corresponding connector 32 - 32 .sup.vii, 33 and the opposite end connectable to a corresponding channel of the device or within the sheath of the device.
  • the number of connectors may be even higher than the number of connecting pipes each time arranged in the sanification chamber 2 so as to allow the sanitizing treatment of medical devices having a differentiated number of channels.
  • the connecting pipes may be connected to the channels or within the sheath of the device by means of connecting elements, not shown, of per se known type and commonly available on the market, whose type can also vary depending on the brand of the device.
  • the pipes can be connected in a removable manner both to the channels that the connectors 32 - 32 .sup.vii, 33 .
  • a machine 1 which comprises a plurality of sanification chambers each adapted to be connected to the same reservoirs S, S′, S′′ by means of respective fluid supplying means 3 .
  • two cases 2 , 2 ′ of the removable type are provided which are housed in respective compartments 31 , 31 ′ and adapted to house both medical device of the flexible type, in particular endoscopes, and rigid devices, and a box-case 2 ′′ for the containment of rigid optical devices, which is also removably inserted in a respective compartment 31 ′′.
  • the supply means 3 may have a collector 9 , 9 ′ as above disclosed for each of the circuits 4 , 4 ′, 4 ′′ adapted to feed the cases 2 , 2 ′.
  • each of these collectors 9 , 9 ′ may have the respective drawing conduits 5 , 5 ′, 5 ′′ connectable to the reservoirs S, S′, S′′ and respective delivery conduits 6 , 6 ′, 6 ′′, . . . connected to the respective sanification chamber 2 , 2 ′.
  • the portion of the circuits 4 , 4 ′, 4 ′′ suitable to serve the box-case 2 ′′ for the rigid devices may instead be devoid of collector as such devices are not generally provided with inner channels.
  • each drawing conduit 5 may comprise a single starting section 36 , 36 ′, 36 ′′ provided with a respective picking spear 15 , 15 ′, 15 ′′ and associated with a respective first pumping device 16 , 16 ′, 16 ′′.
  • the starting section 36 , 36 ′, 36 ′′ branches off into a number of end sections 37 , 37 ′, 37 ′′ equal to the number of sanification chambers 2 , 2 ′, 2 ′′ to be served to transfer fluids to each of them.
  • the hydraulic circuits 4 , 4 ′, 4 ′′ which will serve the different sanification chambers 2 , 2 ′, 2 ′′ may be similar to those described above with reference to the machine 1 with a single sanification chamber 2 .
  • auxiliary devices may also be provided, such as pressure sensors, liquids presence sensors, level sensors, the latter associated with the sanification chamber, or temperature sensors, filtration devices, counters for the calculation of liters of the supplied fluid.
  • the machine 1 can be finally provided with electronic control means, for example with a graphical user interface with touch screen 38 for configuring and controlling the work cycles.
  • the number and type of reservoirs S, S′, S′′ may vary in function of the cleaning cycle to be carried out and they can be housed in a special compartment 39 formed in the frame 40 of the machine 1 and will be connected to drawing conduits 5 by means of respective spears 15 , 15 ′, 15 .
  • first reservoir S for a detergent and decontaminant solution containing a multi-enzymatic synergized mixture with a molecule of Adazone®
  • second reservoir S′ for a first sterilizing solution with a 5% solution of peracetic acid
  • third reservoir S′′ containing a second sterilizing solution containing Adazone® and adapted to cooperate with the first to activate it.
  • the sterilizing molecule indicated above may be that described in European patent EP 1059292 or in European patent application EP 2099501, both by the same Applicant.
  • One of the solutions may be the one described in Italian patent application RM2005A000597 by the same Applicant.
  • the invention achieves the intended objects and in particular to make available a machine for the cold sanification medical devices of relatively simple construction and which allows precise control and uniform application of supply pressure of the sanification fluids.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Epidemiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Endoscopes (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • External Artificial Organs (AREA)
US14/239,741 2011-08-31 2012-08-31 Apparatus for sanitizing medical devices Active US9114185B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITVI2011A000237 2011-08-31
IT000237A ITVI20110237A1 (it) 2011-08-31 2011-08-31 Macchina per la sanificazione a freddo di dispositivi medicali
ITVI2011A0237 2011-08-31
PCT/IB2012/001694 WO2013030662A1 (en) 2011-08-31 2012-08-31 Apparatus for sanitising medical devices

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US20140205513A1 US20140205513A1 (en) 2014-07-24
US9114185B2 true US9114185B2 (en) 2015-08-25

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US (1) US9114185B2 (ru)
EP (1) EP2750719B1 (ru)
CN (1) CN103874513B (ru)
BR (1) BR112014004908B1 (ru)
IT (1) ITVI20110237A1 (ru)
RU (1) RU2623002C2 (ru)
WO (1) WO2013030662A1 (ru)

Cited By (1)

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WO2018195655A1 (en) * 2017-04-25 2018-11-01 9485562 Canada Inc. Endoscope cleaning station having leak tester and high-pressure port

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US20150107627A1 (en) * 2013-10-18 2015-04-23 Barry Miles Snyder Self-Washing Closable Surgical Case Cart Apparatus, System, and Method
US20170332891A1 (en) * 2016-05-18 2017-11-23 Ethicon, Inc. Apparatus and method to identify endoscope type and provide tailored reprocessing
RU2636380C1 (ru) * 2016-08-03 2017-11-22 Общество с ограниченной ответственностью "Компания "Гермед" Система термического обеззараживания твердых медицинских отходов
SG11201909879QA (en) 2017-04-23 2019-11-28 Fisher & Paykel Healthcare Ltd Breathing assistance apparatus
US10486722B2 (en) * 2017-06-30 2019-11-26 Bosch Automotive Service Solutions Inc. Connected workstation service cart
US10675118B2 (en) * 2017-09-06 2020-06-09 Asp Global Manufacturing Gmbh Apparatus and method for delivery of concentrated disinfectant or sterilant to lumen of medical instrument
CN108543179B (zh) * 2018-05-16 2023-09-12 华南理工大学 一种小分子水骨伤治疗仪
RU185073U1 (ru) * 2018-06-27 2018-11-20 Владимир Петрович Сизиков Устройство для сушки и асептического хранения эндоскопов
RU185757U1 (ru) * 2018-07-11 2018-12-18 Владимир Петрович Сизиков Устройство для сушки и асептического хранения эндоскопов
RU187267U1 (ru) * 2018-10-31 2019-02-28 Владимир Петрович Сизиков Устройство для сушки, асептического хранения и транспортировки эндоскопов
RU187268U1 (ru) * 2018-11-08 2019-02-28 Владимир Петрович Сизиков Устройство для сушки, асептического хранения и транспортировки эндоскопов
RU194367U1 (ru) * 2019-08-22 2019-12-06 Владимир Петрович Сизиков Тестер герметичности эндоскопов
RU196169U1 (ru) * 2019-11-12 2020-02-18 Владимир Петрович Сизиков Тестер герметичности эндоскопов

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WO2018195655A1 (en) * 2017-04-25 2018-11-01 9485562 Canada Inc. Endoscope cleaning station having leak tester and high-pressure port
US11065652B2 (en) 2017-04-25 2021-07-20 9485562 Canada Inc. Endoscope cleaning station having leak tester and high-pressure port
US11141761B2 (en) 2017-04-25 2021-10-12 9485562 Canada Inc. Endoscope cleaning station having leak tester and high-pressure port

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RU2014111759A (ru) 2015-10-10
ITVI20110237A1 (it) 2013-03-01
EP2750719A1 (en) 2014-07-09
US20140205513A1 (en) 2014-07-24
EP2750719B1 (en) 2015-03-25
BR112014004908B1 (pt) 2019-04-02
RU2623002C2 (ru) 2017-06-21
WO2013030662A1 (en) 2013-03-07
CN103874513B (zh) 2016-04-27
CN103874513A (zh) 2014-06-18

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